Why Choose the Finder 7S.16.9.110.5420 Safety Relay?
The Finder 7S.16.9.110.5420 is a 110 V DC modular safety relay with six forcibly guided contacts, designed for safety-related switching and contact monitoring in industrial machinery and automation systems. Part of the Finder 7S Series, this relay features 4 normally open (NO) and 2 normally closed (NC) contacts, providing multiple switching paths and feedback contacts for appropriately engineered safety control circuits.
The relay incorporates forcibly guided contact technology, which mechanically links normally open and normally closed contacts to help detect certain failures, including welded contacts, through suitable monitoring circuitry. Its 6 A contact rating, 250 V AC nominal switching voltage and silver tin oxide contact material with gold plating make it suitable for compatible industrial control and auxiliary switching applications.
With a 110 V DC coil, spring-loaded screwless terminals, an illuminated operating indicator and a compact 22.5 mm-wide DIN rail housing, the Finder 7S.16.9.110.5420 combines practical installation features with dependable switching performance. It is particularly suited to machinery safety interfaces, industrial control panels and applications requiring multiple forcibly guided contacts within a compact enclosure.
Key Advantages
- Six forcibly guided contacts support safety-related switching and contact-state monitoring.
- 4 NO + 2 NC contact configuration provides four switching contacts and two feedback contacts.
- 110 V DC rated coil for compatible industrial DC control systems.
- 6 A rated contact current for suitable control and auxiliary loads.
- 250 V AC nominal switching voltage supports industrial electrical control applications.
- Forcibly guided contact construction helps support fault detection in appropriately designed safety circuits.
- Silver tin oxide contacts with gold plating provide suitable switching characteristics for industrial control applications.
- Spring-loaded screwless terminals simplify wiring and servicing.
- Illuminated status indicator allows convenient visual checking of relay energisation.
- 22.5 mm slimline housing helps maximise available space inside electrical control cabinets.
- 35 mm DIN rail mounting supports straightforward panel installation.
- −40 to +70 °C operating temperature range accommodates demanding industrial environments.
Key Features
- Finder 7S Series modular relay with forcibly guided contacts.
- Six-pole contact arrangement: 4 NO + 2 NC.
- 110 V DC nominal coil voltage.
- 6 A rated contact current.
- 250 V AC nominal contact switching voltage.
- 1,500 VA rated switching capacity.
- Silver tin oxide (AgSnO) contacts with gold plating.
- 77 V DC must-operate voltage.
- 11 V DC must-release voltage.
- 11.6 mA nominal coil current.
- 9.5 kΩ coil resistance.
- 1.4 W coil power.
- 12 ms operate time.
- 10 ms release time.
- 10 million mechanical operations rated endurance.
- 100,000 electrical operations rated endurance under specified conditions.
- Integrated illuminated coil indicator.
- Spring-loaded screwless terminals.
- IP20 protection rating.
- 35 mm DIN rail mounting.
Technical Specifications
- Manufacturer: Finder
- Series: 7S Series
- Model: 7S.16.9.110.5420
- Product type: Modular safety relay with forcibly guided contacts
- Nominal coil voltage: 110 V DC
- Must-operate voltage: 77 V DC
- Must-release voltage: 11 V DC
- Nominal coil current: 11.6 mA
- Coil resistance: 9.5 kΩ
- Coil power: 1.4 W
- Number of contacts: 6
- Contact configuration: 4 NO + 2 NC
- Contact form: 6PST, 4 Form A + 2 Form B
- Contact technology: Forcibly guided
- Rated contact current: 6 A
- Nominal contact switching voltage: 250 V AC
- Rated switching capacity: 1,500 VA
- Contact material: Silver tin oxide (AgSnO) with gold plating
- Operate time: 12 ms
- Release time: 10 ms
- Mechanical endurance: 10,000,000 operations
- Electrical endurance: 100,000 operations
- Rated insulation voltage: 250 V
- Operating temperature: −40 to +70 °C
- Protection rating: IP20
- Pollution degree: 2
- Terminal type: Spring-loaded, screwless
- Status indication: Illuminated coil indicator
- Mounting type: 35 mm DIN rail
- Dimensions (W × H × D): 22.5 × 86.2 × 100.3 mm
- Forcibly guided contact standard: EN 61810-3
Six-Contact Forcibly Guided Relay Technology for Industrial Safety Systems
Safety-related industrial control systems frequently require several switching contacts together with feedback contacts that can be monitored for potential failures. The Finder 7S.16.9.110.5420 provides four normally open and two normally closed forcibly guided contacts, making it suitable for applications requiring multiple switching paths and contact-state feedback within a single relay module.
The mechanically linked contact arrangement supports fault detection when incorporated into correctly designed monitoring circuits. Combined with its 110 V DC coil, 6 A contact rating and compact DIN rail-mounted construction, the relay is suitable for machinery safety interfaces, automation equipment and industrial control panels. The device is a safety-related component rather than a complete standalone safety controller; the achieved performance level, safety category or safety integrity level depends on the complete system architecture, diagnostics and validation.
Typical Applications
- Industrial machinery safety-related control circuits.
- Emergency stop switching and monitoring arrangements.
- Machine guarding and interlock control systems.
- Safety-related relay interfaces in automation panels.
- Multiple-contact switching and feedback circuits.
- Manufacturing and production machinery.
- Industrial process equipment and control systems.
- Electrical control cabinets using 110 V DC control supplies.
